Update to 0.7.0.3

CHANGES:
Changed in version 0.7.0.3:
   * dep bump, directory

Changed in version 0.7.0.2:
   * Fix build on Windows with ghc>=7.4.1.

Changed in version 0.7.0.1:
   * Fix GHC build by removing a Haskell comment on an #endif line

Changed in version 0.7.0.0:
   API changes:
   * Remove System.Console.Haskeline.Encoding
   * Make the MonadException class more general (similar to monad-control)
   * Don't make InputT an instance of MonadState/MonadReader
   * #117: Implement mapInputT

   Internal changes:
   * Bump dependencies and general compatibility for ghc-7.6.1
   * Depend on the transformers package instead of mtl
   * Don't depend on the extensible-exceptions package
   * Don't depend on the utf8-string package (except with ghc<7.4.1)
   * Bump the minimum GHC version to 6.10.1
   * Use ScopedTypeVariables instead of PatternSignatures

   Internal fixes:
   * Prevent crashes on Windows when writing too many characters at once
     or ctrl-L on large window (GHC ticket #4415)
   * Remember the user's history and kill ring state after ctrl-c
   * Use ccall on Win64
   * Fix terminfo's guess of the window size

Changed in version 0.6.4.7:
   * Bump dependencies to allow mtl-2.1, containers-0.5 and bytestring-0.10.
   * Prefix C functions with "haskeline_" so we don't clash with other packages
   * Prevent cursor flicker when outputting in the terminfo backend

Changed in version 0.6.4.6:
   * Build with ghc-7.4.1.

Changed in version 0.6.4.5:
   * #116: Prevent hang on 64-bit systems when the prompt contains a control
           character.

Changed in version 0.6.4.4:
   * #115: Fix the behavior of the 'f' and 't' commands when deleting text.
   * #73: Fix regression: pasting multiple lines could drop some characters.
   * Don't require NondecreasingIndentation.

Changed in version 0.6.4.3:
   * Fix a bug on ghc-7.2.1 with tab-completion of Unicode filenames.

Changed in version 0.6.4.2:
   * Various updates for ghc-7.2.1.

Changed in version 0.6.4:
   * Added new function getInputLineWithInitial.